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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2017-09-30 10:54:31 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-10-04 10:30:31 +0200 |
| commit | 91a1fad759ffd616b836984ca0420c7ad5996eef (patch) | |
| tree | a6f80407b354a67b5eb4f7269b68b186984ada74 /arch/s390/include/asm/Kbuild | |
| parent | s390/disassembler: add new z14 instructions (diff) | |
| download | linux-91a1fad759ffd616b836984ca0420c7ad5996eef.tar.xz linux-91a1fad759ffd616b836984ca0420c7ad5996eef.zip | |
s390: use generic rwsem implementation
We never optimized our rwsem inline assemblies to make use of the new
atomic instructions. The generic rwsem implementation implicitly makes
use of the new instructions, since it implements the required rwsem
primitives with atomic operations, which we did optimize.
However even when compiling for old architectures the generic variant
still generates better code. So it's time to simply remove our old
code and switch to the generic implementation.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/Kbuild')
| -rw-r--r-- | arch/s390/include/asm/Kbuild | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/Kbuild b/arch/s390/include/asm/Kbuild index 6e2c9f7e47fa..41c211a4d8b1 100644 --- a/arch/s390/include/asm/Kbuild +++ b/arch/s390/include/asm/Kbuild @@ -15,6 +15,7 @@ generic-y += local64.h generic-y += mcs_spinlock.h generic-y += mm-arch-hooks.h generic-y += preempt.h +generic-y += rwsem.h generic-y += trace_clock.h generic-y += unaligned.h generic-y += word-at-a-time.h |